78113980 has 96 divisors (see below), whose sum is σ = 207277056. Its totient is φ = 24093696.

The previous prime is 78113951. The next prime is 78113983. The reversal of 78113980 is 8931187.

It is a super-2 number, since 2×78113980² = 12203587742880800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78113983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54027 + ... + 55453.

It is an arithmetic number, because the mean of its divisors is an integer number (2159136).

Almost surely, 2^78113980 is an apocalyptic number.

78113980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78113980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103638528).

78113980 is an abundant number, since it is smaller than the sum of its proper divisors (129163076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78113980 is a wasteful number, since it uses less digits than its factorization.

78113980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1481 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 78113980 is about 8838.2113575089. The cubic root of 78113980 is about 427.4738855268.

The spelling of 78113980 in words is "seventy-eight million, one hundred thirteen thousand, nine hundred eighty".